feat: create tm-core and apps/cli (#1093)

- add typescript
- add npm workspaces

packages/tm-core/tests/setup.ts

@@ -0,0 +1,21 @@
+/**
+ * @fileoverview Vitest test setup file
+ */
+
+import { afterAll, beforeAll, vi } from 'vitest';
+
+// Setup any global test configuration here
+// For example, increase timeout for slow CI environments
+if (process.env.CI) {
+	// Vitest timeout is configured in vitest.config.ts
+}
+
+// Suppress console errors during tests unless explicitly testing them
+const originalError = console.error;
+beforeAll(() => {
+	console.error = vi.fn();
+});
+
+afterAll(() => {
+	console.error = originalError;
+});